The text says:
However, there are also special ways for programs to substitute
other keymaps for some of those. The variable `overriding-local-map',
if non-`nil', specifies a keymap that replaces all the usual active
keymaps except the global keymap. Another way to do this is with
`overriding-terminal-local-map'; it operates on a per-terminal basis.
These variables are documented below.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
But those variables are NOT documented below.
In GNU Emacs 24.3.50.1 (i386-mingw-nt5.1.2600)
of 2013-03-23 on VBOX
Bzr revision: 112115 address@hidden
Windowing system distributor `Microsoft Corp.', version 5.1.2600
Configured using:
`configure --with-gcc (4.7) --no-opt --enable-checking --cflags
-IC:/emacs/libs/libXpm-3.5.10/include -IC:/emacs/libs/libXpm-3.5.10/src
-IC:/emacs/libs/libpng-dev_1.4.3-1_win32/include
-IC:/emacs/libs/zlib-dev_1.2.5-2_win32/include
-IC:/emacs/libs/giflib-4.1.4-1-lib/include
-IC:/emacs/libs/jpeg-6b-4-lib/include
-IC:/emacs/libs/tiff-3.8.2-1-lib/include
-IC:/emacs/libs/libxml2-2.7.8-w32-bin/include/libxml2
-IC:/emacs/libs/gnutls-3.1.10-w32/include
-IC:/emacs/libs/libiconv-1.14-2-mingw32-dev/include'